Ron Aniello plays on and co-produced “Faithless,” “Inyo,” “Perfect World” and “Twilight Hours,” and co-produced two of the other albums in the set.

The Boss' new box set organizes 83 previously unheard songs into seven distinct LPs, each with its own sound and theme.

After years of speculation and fan clamoring, Bruce Springsteen finally releases Friday “Tracks II: The Lost Albums,” an expansive seven-album box set and sequel to 1998’s “Tracks,” comprising decades of music — most of which is previously unheard by even the most devout Spring-nuts.